package com.jt.provider.controller;

import com.jt.provider.service.ResourceService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.concurrent.atomic.AtomicLong;

@RestController
@RequestMapping("/provider")
public class ProviderSentinelController {

    @RequestMapping("/sentinel01")
    public String doSentinel01() {
        return "sentinel 01 test";
    }

    @GetMapping("/sentinel02")
    public String doSentinel02() {
        return "sentinel 02 test";
    }


    @Autowired
    private ResourceService resourceService;
    @GetMapping("/sentinel03")
    public String doSentinel03() {
        resourceService.doGetResource();
        return "sentinel 03 test";
    }

    // 构建一个AtomicLong对象,提供了线程安全的自增,自减操作
    private AtomicLong atomicLong = new AtomicLong(1);
    @GetMapping("/sentinel04")
    public String doSentinel04() throws InterruptedException {
        long num = atomicLong.getAndIncrement();
        if (num%2 == 0) { // 模拟慢调用
            Thread.sleep(200);
        }
        return "sentinel 04 test";
    }

}
